open_trunc(3)

🌸 NAME 🌸

bestie. open_trunc — open a file for writing. that's it. that's the girl. 💖

(this lil page lives in the Library Functions Manual, iykyk)

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✨ SYNTAX ✨

okay so first you gotta pull her in, like this:

#include <libowfat/open.h>

and then the signature itself, which is literally:

int open_trunc(const char *filename);

no cap, that's the whole vibe. 🎀

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🦋 DESCRIPTION 🦋

so open_trunc opens the file filename for write-only use and hands you back the file handle. main character behavior, honestly.

here's the tea though, and it's important 👑

• if the file already exists, it gets truncated to zero bytes length. like, gone. wiped. bye. 💀
• if it does not exist, it gets created with mode 0644. new file, fresh start, slay. ✨
• and if there was an error opening or creating the file, open_trunc returns -1 and sets errno accordingly. not the glow-up we wanted but at least she tells you. 😭

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🫶 SEE ALSO 🫶

go read these next, they're all part of the friend group:

• open(2)
• open_append(3)
• open_excl(3)
• open_read(3)
• open_rw(3)
• open_write(3)
• openreadclose(3)
• readclose(3)
• readclose_append(3)

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and that's the whole page, bestie!! this one came from the Library Functions Manual, and the lil footer at the bottom is literally just open_trunc(3) again, saying her own name one more time on the way out. iconic. 💅🌸 no version or date stamp on this one, just pure open_trunc(3) energy. mwah. 🦋💜